CN112577682A - Tapered roller bearing axial rigidity measures auxiliary fixtures - Google Patents
Tapered roller bearing axial rigidity measures auxiliary fixtures Download PDFInfo
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- CN112577682A CN112577682A CN202011313394.8A CN202011313394A CN112577682A CN 112577682 A CN112577682 A CN 112577682A CN 202011313394 A CN202011313394 A CN 202011313394A CN 112577682 A CN112577682 A CN 112577682A
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- bearing
- diameter
- tapered roller
- cover plate
- mandrel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses an auxiliary tool for measuring axial rigidity of a tapered roller bearing. Belongs to the technical field of machining process equipment. The problem that when an existing press machine is used for bearing rigidity measurement tests, the error is large due to the fact that the existing press machine is direct and simple to measure, an auxiliary tool specially corresponding to bearing rigidity measurement does not exist, and potential safety hazards exist is mainly solved. It is mainly characterized in that: comprises a mandrel, a base and a cover plate; the mandrel is provided with a cylindrical step matched with the first bearing to be measured, and the center of the mandrel is provided with a measuring column; the base is provided with a cylindrical step matched with the second bearing to be measured, and the center of the base is provided with a through hole; the upper part and the lower part of the cover plate are respectively provided with a cylindrical groove matched with the first measured bearing and the second measured bearing, and the center of the cover plate is provided with a through hole. The invention has the advantages of multiple sets of measurement and mean value taking, and high accuracy; the axial positioning is accurate; the potential safety hazard during measurement is low; the device has the characteristics of simple structure, convenience for processing and repeated use, and is mainly used for measuring the axial rigidity of the tapered roller bearing on the axial press.
Description
Technical Field
The invention belongs to the technical field of machining process equipment, and particularly relates to an auxiliary tool for measuring axial rigidity of a tapered roller bearing.
Background
At present, the requirements of manufacturers in the industry and bearing hosts on the rigidity of bearings are more and more urgent, and particularly in the directions of a main shaft bearing of a precision machine tool, a high-speed bearing, a bearing of an automobile transmission system and a bearing of a hub unit, when the manufacturers of the hosts carry out bearing installation and pre-tightening, the manufacturers of the bearings need to find the optimal pre-tightening amount for installation, and often hope that the manufacturers of the bearings can provide rigidity test data and measurement curves corresponding to the bearings. In the mechanical industry, a 10T and 30T pressure tester can carry out a material elastic displacement test according to a metal material room temperature compression test method at present, but a tester manufacturer does not provide an auxiliary tool for measuring the rigidity of a bearing. The conical bearing is of a separable structure, a retainer of the bearing is an axial movable part, the outer diameter of the conical bearing produced conventionally in the industry is from 30mm to 280 mm, and an auxiliary tool device for axial rigidity measurement needs to be developed and designed for rigidity detection.
Disclosure of Invention
The invention aims to provide an auxiliary tool device capable of measuring the axial rigidity of the tapered roller bearing aiming at the defects, which can meet the characteristic requirements of products, can measure quickly, stably and accurately and meets the measurement requirements.
The technical solution of the invention is as follows: the utility model provides a tapered roller bearing axial rigidity measures auxiliary fixtures which characterized in that: comprises a mandrel, a base and a cover plate; the mandrel is provided with a cylindrical step matched with the inner diameter surface and the outer end surface of the first bearing to be measured, and a measuring column is arranged in the center of the mandrel; the base is provided with a cylindrical step matched with the inner diameter surface and the outer end surface of the second measured bearing, and the center of the base is provided with a through hole for the measuring column to pass through; the upper and lower parts of the cover plate are respectively provided with a cylindrical groove matched with the outer diameter surface and the outer end surface of the first measured bearing and the second measured bearing, and the center of the cover plate is provided with a through hole.
The base in the technical scheme of the invention is provided with a cylindrical step matched with the support groove of the press machine.
The measuring column in the technical scheme of the invention is matched with a pressure sensor of the press machine.
The mandrel in the technical solution of the invention is provided with a circular plane which is matched with the pressure head of the press.
The mandrel in the technical scheme of the invention is a three-stage cylindrical step shaft with successively reduced diameters; the base is a three-stage cylindrical step shaft with a cylindrical through hole in the center; the cover plate is cylindrical, and the through hole in the center is a circular through hole.
The diameter of the upper cylindrical groove of the cover plate is the same as the outer diameter of the first measured bearing, and the diameter of the lower cylindrical groove is the same as the outer diameter of the second measured bearing (4).
The spindle has the technical scheme that the shaft diameter of the first-stage step of the spindle is between the inner diameter of the first measured bearing inner ring and the diameter of the inner ring large flange; the shaft diameter of the second-stage step shaft is the same as the inner diameter of the first measured bearing; the shaft diameter of the third step is smaller than the inner diameter of the first measured bearing.
The shaft diameter of the first-stage step shaft of the base in the technical scheme of the invention is the same as the inner diameter of the second measured bearing; the shaft diameter of the second-stage step shaft is between the inner diameter of the second tested bearing inner ring and the diameter of the inner ring large flange; the shaft diameter of the third-stage step shaft is the same as the size of the support groove of the measuring press.
The diameter of a circular through hole of the cover plate in the technical scheme of the invention is larger than the diameters of the outer raceways of the large ends of the outer rings of the first bearing to be tested and the second bearing to be tested; the height of the circular through hole of the cover plate is larger than the axial displacement of the first tested bearing and the second tested bearing retainer.
In the technical scheme of the invention, a tool withdrawal groove is arranged at the step of the mandrel; a tool withdrawal groove is formed in the step of the base; the bottom of the groove of the cover plate is provided with a tool withdrawal groove.
The invention adopts the auxiliary tool for measuring the axial rigidity of the tapered roller bearing, which consists of a mandrel, a base and a cover plate, wherein the mandrel is provided with a cylindrical step matched with the inner diameter surface and the outer end surface of a first measured bearing, the center is provided with a measuring column, the base is provided with a cylindrical step matched with the inner diameter surface and the outer end surface of a second measured bearing, the center is provided with a through hole for the measuring column to pass through, the upper part and the lower part of the cover plate are respectively provided with a cylindrical groove matched with the outer diameter surface and the outer end surface of the first measured bearing and the second measured bearing, and the center is provided with the through hole, so that the first measured bearing and the second measured bearing can be accurately positioned axially, the interference of the axial movement of a bearing retainer can be avoided when the axial rigidity of the first measured bearing and the second measured bearing is measured, the axial rigidity of the two bearings can be measured simultaneously under the existing capability of measuring equipment, and the average value of the bearings with the same measurement is taken, so that the measurement is more accurate.
The invention is designed in a wrapping way, and reduces the potential safety hazard when the large-load axial force rigidity is measured. The invention has simple and practical structure and is convenient to process and reuse.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1. a mandrel; 2. a first measured bearing; 3. a cover plate; 4. a second measured bearing; 5. the press machine supports the groove; 6. a press pressure sensor; 7. a base; 8. and (4) a press head.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1. The invention discloses an embodiment of an auxiliary tool for measuring axial rigidity of a tapered roller bearing, which consists of a mandrel 1, a base 7 and a cover plate 3, can simultaneously clamp a first measured bearing 2 and a second measured bearing 4 which have the same structure, and can measure the rigidity of the tapered roller bearing by using the conventional press machine.
The back of the mandrel 1 is provided with a three-stage cylindrical step shaft, and the shaft diameters of the step shafts are sequentially reduced. The front side of the mandrel 1 is provided with a circular plane which is matched with a pressure head 8 of the press machine. The diameter of the first-stage step shaft of the mandrel 1 is between the inner diameter of the inner ring of the first tested bearing 2 and the diameter of the large flange of the inner ring. The shaft diameter size of the second-stage step of the mandrel 1 is the same as the inner diameter of the first tested bearing 2, and the cylindrical step between the first-stage step shaft and the second-stage step shaft of the mandrel 1 is matched with the inner diameter surface and the outer end surface of the first tested bearing 2. The third step shaft of the mandrel 1 is a measuring column, the diameter of the shaft is smaller than the inner diameter of the first measured bearing 2, and the shaft is matched with a pressure sensor 6 of the press machine. The step of the mandrel 1 is provided with a tool withdrawal groove.
The base 7 is provided with a three-level cylindrical step shaft, and the center of the base is provided with a cylindrical through hole which is convenient for the measuring column to pass through. The base 7 has the same shaft diameter size of the first-stage step shaft as the inner diameter of the second measured bearing 4, the shaft diameter size of the second-stage step shaft is positioned between the inner diameter of the inner ring of the second measured bearing 4 and the diameter of the large flange of the inner ring, and the cylindrical step between the first-stage step shaft and the second-stage step shaft is matched with the inner diameter surface and the outer end surface of the second measured bearing 4. The diameter of the shaft of the third-stage step shaft of the base 7 is the same as that of the support groove 5 of the press machine, and the cylindrical step between the second-stage step shaft and the third-stage step shaft is matched with the boss of the support groove 5 of the press machine, so that the auxiliary tool can be conveniently installed on the press machine for rigidity measurement. The step of the base 7 is provided with a tool withdrawal groove.
The front and the back of the cover plate 3 are respectively provided with a cylindrical groove matched with the outer diameter surface and the outer end surface of the first measured bearing 2 and the second measured bearing 4. The cover plate 3 is cylindrical, and a circular through hole is formed in the center. The diameter of the cylindrical groove on the front surface of the cover plate 3 is the same as the outer diameter of the first measured bearing 2, and the diameter of the cylindrical groove on the back surface is the same as the outer diameter of the second measured bearing 4. The diameter of the circular through hole of the cover plate 3 is larger than the diameters of the large-end outer raceways of the outer rings of the first measured bearing 2 and the second measured bearing 4, and the height of the circular through hole is larger than the axial displacement of the retainer of the first measured bearing 2 and the second measured bearing 4. The groove bottom of the cover plate 3 is provided with a tool withdrawal groove.
The first tested bearing 2 and the second tested bearing 4 can be completely and fixedly placed in the circular groove of the cover plate 3, the shaft diameter of the second step of the mandrel 1 can be completely clamped into the inner diameter of the bearing 2, and the shaft diameter of the third step of the mandrel can be contacted with the pressure sensor 6 of the press machine through the cylindrical through hole of the cover plate 3 and the cylindrical through hole of the base 7. When the press ram 8 exerts an axial force, the axial displacement of the first measured bearing 2 and the second measured bearing 4 can be transmitted to the press pressure sensor 6. The cover plate 3 can drive the first measured bearing 2 and the second measured bearing 4 to rotate for measurement.
Claims (10)
1. The utility model provides a tapered roller bearing axial rigidity measures auxiliary fixtures which characterized in that: comprises a mandrel (1), a base (7) and a cover plate (3); the mandrel (1) is provided with a cylindrical step matched with the inner diameter surface and the outer end surface of the first bearing (2) to be measured, and the center of the mandrel is provided with a measuring column; the base (7) is provided with a cylindrical step matched with the inner diameter surface and the outer end surface of the second measured bearing (4), and the center of the base is provided with a through hole for the measuring column to pass through; the upper and lower parts of the cover plate (3) are respectively provided with a cylindrical groove matched with the outer diameter surface and the outer end surface of the first measured bearing (2) and the second measured bearing (4), and the center of the cover plate is provided with a through hole.
2. The tapered roller bearing axial rigidity measurement auxiliary fixtures of claim 1, characterized in that: the base (7) is provided with a cylindrical step matched with the support groove (5) of the press machine.
3. The tapered roller bearing axial rigidity measurement auxiliary tool according to claim 1 or 2, characterized in that: the measuring column is matched with a pressure sensor (6) of the press machine.
4. The tapered roller bearing axial rigidity measurement auxiliary tool according to claim 1 or 2, characterized in that: the mandrel (1) is provided with a circular plane matched with the pressure head (8) of the press.
5. The tapered roller bearing axial rigidity measurement auxiliary tool according to claim 1 or 2, characterized in that: the mandrel (1) is a three-stage cylindrical step shaft with the diameter gradually reduced; the base (7) is a three-stage cylindrical step shaft provided with a cylindrical through hole at the center; the cover plate (3) is cylindrical, and the through hole in the center is a circular through hole.
6. The tapered roller bearing axial rigidity measurement auxiliary fixtures of claim 5, characterized in that: the diameter of the upper cylindrical groove of the cover plate (3) is the same as the outer diameter of the first tested bearing (2), and the diameter of the lower cylindrical groove is the same as the outer diameter of the second tested bearing (4).
7. The tapered roller bearing axial rigidity measurement auxiliary fixtures of claim 5, characterized in that: the shaft diameter of the first-stage step shaft of the mandrel (1) is positioned between the inner diameter of the inner ring of the first tested bearing (2) and the diameter of the large flange of the inner ring; the shaft diameter of the second-stage step shaft is the same as the inner diameter of the first tested bearing (2); the shaft diameter of the third step is smaller than the inner diameter of the first measured bearing (2).
8. The tapered roller bearing axial rigidity measurement auxiliary fixtures of claim 5, characterized in that: the shaft diameter of the first-stage step shaft of the base (7) is the same as the inner diameter of the second bearing (4) to be measured; the shaft diameter of the second-stage step shaft is positioned between the inner diameter of the inner ring of the second tested bearing (4) and the diameter of the large flange of the inner ring; the shaft diameter of the third stage step shaft is the same as the size of the support groove (5) of the measuring press machine.
9. The tapered roller bearing axial rigidity measurement auxiliary fixtures of claim 5, characterized in that: the diameter of the circular through hole of the cover plate (3) is larger than the diameters of the outer raceways of the large ends of the outer rings of the first bearing (2) to be tested and the second bearing (4) to be tested; the height of the circular through hole of the cover plate (3) is larger than the axial displacement of the first tested bearing (2) and the second tested bearing (4) retainer.
10. The tapered roller bearing axial rigidity measurement auxiliary fixtures of claim 5, characterized in that: a tool withdrawal groove is formed in the step of the mandrel (1); a tool withdrawal groove is formed in the step of the base (7); the cover plate (3) is provided with a tool withdrawal groove at the bottom of the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313394.8A CN112577682A (en) | 2020-11-20 | 2020-11-20 | Tapered roller bearing axial rigidity measures auxiliary fixtures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313394.8A CN112577682A (en) | 2020-11-20 | 2020-11-20 | Tapered roller bearing axial rigidity measures auxiliary fixtures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112577682A true CN112577682A (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011313394.8A Pending CN112577682A (en) | 2020-11-20 | 2020-11-20 | Tapered roller bearing axial rigidity measures auxiliary fixtures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112577682A (en) |
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2020
- 2020-11-20 CN CN202011313394.8A patent/CN112577682A/en active Pending
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